Humic substances of peat: study of the parameters that influence on the process of alkaline e extraction.

The probability of attending school four our group of interest in this region increased by 6.5 percentage points after the expansion of the Bolsa Família program in 2007 and

Mendonca DM Amorim MEB Medina PO Alves Filho AO Brito TCCA Conde NCO Avaliação de erros em exames radiográficos intrabucais realizada por acadêmicos de odontologia/ ufam ••

In the present study, the extraction behaviour of humic substances (HS) from an Oxisol and a Mollisol from South Brazil, by using 0.1 and 0.5 mol L -1 NaOH and 0.15 mol L -1

The aim of the present work was to optimize a procedure for extraction of humic substances (HS) from peat, using continuous flow with different extractants (NaOH, KOH and Na 4 P 2 O

The humin fraction was obtained after extraction of the humic and fulvic acids, following the procedure described by the International Humic Substances Society, based on

The present study optimized the various experimental parameters such as the time influence on extraction process, influence of pH, extractant concentration, separation

especiarias, e uma frequência abaixo dos 50% das categorias outros (castanhas, azeitonas, gordura vegetal, cogumelos, temperos) ovo, pescado, leguminosas, carne branca,

Power demand of the mixer’s drive reveals the mixer’s operating characteristics and reliable monitoring of the mixing processes involving the evaluation of power consumption